The significance and applicability of Hadamard product are well known in the
literature. For example, this product is used to communication and information theory in correcting codes of satellite transmissions, signal processing and
pattern recognition, and is also
used to discrete combinatorial geometry and graph theory in
interrelations between Hadamard matrices and different combinatorial
configurations of block designs and Latin square. Applications
can also be found in statistical analysis. For more details and
applications, we refer the reader to the survey papers [1]}, [2]}, [3]}, [4]}.
